A light-weight composite material locally reinforced wrench

By embedding reinforcing elements and reinforcing plates within the lightweight connecting part of the wrench, the problems of low strength in all-plastic wrenches and heavy weight in all-alloy wrenches are solved, achieving a lightweight, durable, and insulated wrench design.

CN224334346UActive Publication Date: 2026-06-09SHANGHAI CARBON BEAM IND CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI CARBON BEAM IND CO LTD
Filing Date
2025-05-15
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing all-plastic wrenches are weak and not wear-resistant, while all-alloy wrenches are heavy and inconvenient to carry, and are conductive and not insulating.

Method used

The lightweight wrench connector incorporates two reinforcing components, and reinforcing plates are fixed to both sides of the connector. Ceramic or alloy reinforcing components are used to enhance the strength and wear resistance of the working part.

Benefits of technology

It improves the strength and wear resistance of the wrench, reduces its weight, makes it easier to carry, avoids the generation of conductive sparks, and extends its service life.

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Abstract

The utility model discloses a kind of local strengthening wrenches of light composite material belongs to tool technical field. Including work part one, light wrench connecting part and work part two, work part one is embedded with reinforcing piece one, work part two is embedded with reinforcing piece two, light wrench connecting part both sides surface is fixed with reinforcing sheet. By light wrench connecting part, overall weight is reduced and intensity is guaranteed, in the work part one and work part two of wrench embedding reinforcing assembly, the intensity, rigidity and surface wear resistance hardness of work part one and work part two can be greatly improved, so that wrench can carry greater stress, and prolong service life. Compared with all-plastic wrench, it is more durable and lighter than all-metal and alloy wrench, convenient to carry and use.
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Description

Technical Field

[0001] This utility model belongs to the field of tool technology, specifically a lightweight composite material locally reinforced wrench. Background Technology

[0002] A wrench is a common installation and disassembly tool. It is a hand tool that uses leverage to tighten or loosen bolts, screws, nuts, and other threaded fasteners by clamping the bolt or nut in an open or recessed position. Typically, one or both ends of the handle have an opening or recess for clamping the bolt or nut. When in use, external force is applied to the handle in the direction of thread rotation to tighten the bolt or nut. In current technology, to reduce the cost and weight of wrenches, the production of all-plastic wrenches is increasing. However, all-plastic wrenches have the problem of low strength in the working area, such as the clamp. With use and increased intensity, all-plastic wrenches will wear out and even become damaged. While all-alloy wrenches meet the strength requirements, they are too heavy to carry, are not conductive or insulating, and can produce sparks when struck. They also lack the inherent safety characteristics of explosion-proof tools. Therefore, a lightweight, reinforced wrench made of a high-strength composite material is needed. Utility Model Content

[0003] 1. Technical problem to be solved by the utility model

[0004] The purpose of this invention is to solve the problems of existing all-plastic wrenches being low in strength and not wear-resistant, while all-alloy wrenches are heavy, inconvenient to carry, and conductive but not insulating.

[0005] 2. Technical Solution

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] This utility model discloses a lightweight composite material locally reinforced wrench, comprising a working part one, a lightweight wrench connecting part, and a working part two. A reinforcing member one is embedded in the working part one, and a reinforcing member two is embedded in the working part two. The inner sides of the reinforcing members one and two are configured to protrude from the working part one or the working part two so that the inner sides of the reinforcing members one and two form a working surface. Reinforcing plates are fixed on both sides of the lightweight wrench connecting part.

[0008] Preferably, the reinforcing member one includes a lightweight wrench connecting part one and a reinforcing part one, the shape of the reinforcing part one is adapted to the shape of the jaw of the working part one, the lightweight wrench connecting part one is configured to extend into the lightweight wrench connecting part, and the thickness of the reinforcing part one is 10 to 50% greater than the thickness of the working part one.

[0009] Preferably, the second reinforcing member includes a second lightweight wrench connecting part and a second reinforcing part. The shape of the second reinforcing part is adapted to the shape of the second working part. The second lightweight wrench connecting part is configured to extend into the light-weight wrench connecting part. The thickness of the second reinforcing part is greater than 40% of the total thickness.

[0010] Preferably, the first and second reinforcing parts are ceramic reinforcing components or alloy reinforcing components.

[0011] Preferably, the second reinforcing part is annular, and the edge of the second reinforcing part is provided with several corrugated recesses.

[0012] Preferably, the area of ​​the reinforcing plate is greater than 70% of the surface area of ​​the lightweight wrench connection portion to which it is connected.

[0013] Preferably, the thickness of the reinforcing sheet is 2-5 mm, and the surface of the reinforcing sheet is provided with anti-slip texture.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0016] This utility model discloses a lightweight composite material locally reinforced wrench, comprising a working part one, a lightweight wrench connecting part, and a working part two. A reinforcing member one is embedded within the working part one, and a reinforcing member two is embedded within the working part two. Reinforcing plates are fixed to both sides of the lightweight wrench connecting part. By reducing the overall weight while maintaining strength through the lightweight wrench connecting part, and embedding reinforcing components within the working parts one and two, the strength, rigidity, and surface wear resistance of the working parts one and two can be significantly improved, allowing the wrench to withstand greater forces and extending its service life. It is more durable than all-plastic wrenches and lighter than all-metal and alloy wrenches, making it convenient to carry and use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a lightweight composite material locally reinforced wrench according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of a lightweight composite material partially reinforced wrench according to the present invention;

[0019] Figure 3 This is a structural schematic diagram of the reinforcing member one of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the second reinforcing member of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 110. Working section one; 111. Clamp; 120. Lightweight wrench connection; 121. Reinforcing plate; 130. Working section two;

[0023] 200. Reinforcing component 1; 210. Lightweight wrench connection part 1; 220. Reinforcing component 1;

[0024] 300. Reinforcing component two; 310. Lightweight wrench connection part two; 320. Reinforcing component two. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0029] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Example 1

[0032] See attached document Figure 1-4 This embodiment of a lightweight composite material reinforced wrench includes a first working part 110, a lightweight wrench connecting part 120, and a second working part 130. A first reinforcing member 200 is embedded within the first working part 110, and a second reinforcing member 300 is embedded within the second working part 130. The inner sides of the first reinforcing member 200 and the second reinforcing member 300 are configured to protrude from the first working part 110 or the second working part 130, forming a working surface on their inner sides. Reinforcing plates 121 are fixed to both sides of the lightweight wrench connecting part 120. This lightweight composite material reinforced wrench reduces overall weight while maintaining strength through the lightweight wrench connecting part 120. The embedded reinforcing components within the first working part 110 and the second working part 130 significantly improve the strength, rigidity, and surface wear resistance of the first working part 110 and the second working part 130, enabling the wrench to withstand greater forces and extending its service life. More durable than all-plastic wrenches and lighter than all-metal and alloy wrenches, making them easier to carry and use.

[0033] The reinforcing piece 121 is horizontally embedded in the surface of the lightweight wrench connecting part 120. Specifically, the surface of the lightweight wrench connecting part 120 is provided with a groove for accommodating and fixing the reinforcing piece 121. The reinforcing piece 121 is made of alloy sheet, ceramic sheet or other materials with high hardness. The lightweight wrench connecting part 120 is made of all-carbon fiber composite blend polymer material.

[0034] The reinforcing member 200 includes a lightweight wrench connection portion 210 and a reinforcing portion 220. The shape of the reinforcing portion 220 is adapted to the shape of the bayonet 111 of the working portion 110. The lightweight wrench connection portion 210 is configured to extend into the lightweight wrench connection portion 120. The thickness of the reinforcing portion 220 is 10 to 50% greater than the thickness of the working portion 110.

[0035] The second reinforcing member 300 includes a second lightweight wrench connecting part 310 and a second reinforcing part 320. The shape of the second reinforcing part 320 is adapted to the shape of the second working part 130. The second lightweight wrench connecting part 310 is configured to extend into the second lightweight wrench connecting part 120. The thickness of the second reinforcing part 320 is greater than 40% of the thickness.

[0036] Lightweight wrench connecting part 1 210 and lightweight wrench connecting part 2 310 are configured to extend into lightweight wrench connecting part 120, thereby avoiding the possibility of breakage between lightweight wrench connecting part 120 and working part 110 and working part 2 130 during operation, and improving overall strength and stress consistency. The reinforcing part 2 320 is annular, and its edge is provided with several corrugated recesses.

[0037] The area of ​​the reinforcing plate 121 is greater than 70% of the surface area of ​​the connected lightweight wrench connection part 120. The thickness of the reinforcing plate 121 is 2-5mm, and the surface of the reinforcing plate 121 is provided with anti-slip texture. The reinforcing plate 121 can strengthen the lightweight wrench connection part 120 and effectively prevent the lightweight wrench connection part 120 from breaking laterally.

[0038] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A lightweight composite material locally reinforced wrench, characterized in that: It includes a working part one (110), a lightweight wrench connecting part (120) and a working part two (130). A reinforcing member one (200) is embedded in the working part one (110), and a reinforcing member two (300) is embedded in the working part two (130). The inner sides of the reinforcing member one (200) and the reinforcing member two (300) are configured to expose the working part one (110) or the working part two (130) so that the inner sides of the reinforcing member one (200) and the reinforcing member two (300) form a working surface. Reinforcing plates (121) are fixed on both sides of the lightweight wrench connecting part (120).

2. The lightweight composite material locally reinforced wrench according to claim 1, characterized in that: The first reinforcing member (200) includes a lightweight wrench connection part (210) and a first reinforcing part (220). The shape of the first reinforcing part (220) is adapted to the shape of the bayonet (111) of the first working part (110). The first lightweight wrench connection part (210) is configured to extend into the lightweight wrench connection part (120). The thickness of the first reinforcing part (220) is 10 to 50% greater than the thickness of the first working part (110).

3. A lightweight composite material locally reinforced wrench according to claim 2, characterized in that: The second reinforcing member (300) includes a second lightweight wrench connection (310) and a second reinforcing member (320), the shape of which is adapted to the shape of the second working member (130), and the second lightweight wrench connection (310) is configured to extend into the second lightweight wrench connection (120).

4. A lightweight composite material locally reinforced wrench according to claim 3, characterized in that: The first reinforcing part (220) and the second reinforcing part (320) are ceramic reinforcing components or alloy reinforcing components.

5. A lightweight composite material locally reinforced wrench according to claim 3, characterized in that: The second reinforcing part (320) is annular, and the edge of the second reinforcing part (320) is provided with several corrugated recesses.

6. A lightweight composite material locally reinforced wrench according to claim 1, characterized in that: The area of ​​the reinforcing plate (121) is greater than 70% of the surface area of ​​the connected lightweight wrench connector (120).

7. A lightweight composite material locally reinforced wrench according to claim 1, characterized in that: The thickness of the reinforcing sheet (121) is 2~5mm, and the surface of the reinforcing sheet (121) is provided with anti-slip texture.